522 lines
13 KiB
C
522 lines
13 KiB
C
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/* Copyright (C) Boris Nikolaus, Germany, 1996-1997. All rights reserved. */
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/* Copyright (C) Microsoft Corporation, 1997-1998. All rights reserved. */
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#include "precomp.h"
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#ifdef _DEBUG
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void MyDebugBreak(void)
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{
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// to correct the misleading stack dump
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DebugBreak();
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}
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#endif // _DEBUG
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// Memory manager for decoder
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#ifdef ENABLE_MEMORY_TRACKING
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LPVOID DbgDecMemAlloc ( ASN1decoding_t dec, ASN1uint32_t cbSize, LPSTR pszFileName, ASN1uint32_t nLineNumber )
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#else
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LPVOID DecMemAlloc ( ASN1decoding_t dec, ASN1uint32_t cbSize )
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#endif
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{
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LPVOID lp = NULL;
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ASN1INTERNdecoding_t lpInfo = (ASN1INTERNdecoding_t) dec;
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// make sure the size is 4-byte aligned
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ASN1_SIZE_ALIGNED(cbSize);
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// accumulate the total size
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lpInfo->cbLinearBufSize += cbSize;
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// allocate the buffer
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if (lpInfo->fExtBuf)
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{
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if (lpInfo->cbRemExtBufSize >= cbSize)
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{
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lp = lpInfo->lpRemExtBuf;
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lpInfo->lpRemExtBuf += cbSize;
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lpInfo->cbRemExtBufSize -= cbSize;
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}
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else
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{
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DecAssert(dec, FALSE);
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}
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}
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else
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{
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#ifdef ENABLE_MEMORY_TRACKING
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lp = DbgMemAlloc(cbSize, _ModName(dec), pszFileName, nLineNumber);
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#else
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lp = MemAllocEx(dec, cbSize, TRUE); // zero memory
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#endif
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}
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// make sure to propagate error
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if (lp == NULL)
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{
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ASN1DecSetError(dec, ASN1_ERR_MEMORY);
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}
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return lp;
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}
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void DecMemFree ( ASN1decoding_t dec, LPVOID lpData )
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{
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if (! ((ASN1INTERNdecoding_t) dec)->fExtBuf)
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{
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MemFree(lpData);
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}
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}
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#ifdef ENABLE_MEMORY_TRACKING
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LPVOID DbgDecMemReAlloc ( ASN1decoding_t dec, LPVOID lpData, ASN1uint32_t cbSize, LPSTR pszFileName, ASN1uint32_t nLineNumber )
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#else
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LPVOID DecMemReAlloc ( ASN1decoding_t dec, LPVOID lpData, ASN1uint32_t cbSize )
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#endif
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{
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LPVOID lp = NULL;
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// make sure the size is 4-byte aligned
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ASN1_SIZE_ALIGNED(cbSize);
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// accumulate the total size
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((ASN1INTERNdecoding_t) dec)->cbLinearBufSize += cbSize;
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// allocate the buffer
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if (((ASN1INTERNdecoding_t) dec)->fExtBuf)
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{
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if (lpData == NULL)
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{
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lp = DecMemAlloc(dec, cbSize);
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}
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else
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{
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DecAssert(dec, FALSE);
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}
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}
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else
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{
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#ifdef ENABLE_MEMORY_TRACKING
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lp = DbgMemReAlloc(lpData, cbSize, _ModName(dec), pszFileName, nLineNumber);
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#else
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lp = MemReAllocEx(dec, lpData, cbSize, TRUE); // zero memory
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#endif
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}
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// make sure to propagate error
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if (lp == NULL)
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{
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ASN1DecSetError(dec, ASN1_ERR_MEMORY);
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}
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return lp;
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}
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/***
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*char *ms_bSearch() - do a binary search on an array
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*
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*Purpose:
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* Does a binary search of a sorted array for a key.
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*
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*Entry:
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* const char *key - key to search for
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* const char *base - base of sorted array to search
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* unsigned int num - number of elements in array
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* unsigned int width - number of bytes per element
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* int (*compare)() - pointer to function that compares two array
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* elements, returning neg when #1 < #2, pos when #1 > #2, and
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* 0 when they are equal. Function is passed pointers to two
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* array elements.
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*
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*Exit:
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* if key is found:
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* returns pointer to occurrence of key in array
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* if key is not found:
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* returns NULL
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*
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*Exceptions:
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*
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*******************************************************************************/
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void * ms_bSearch (
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const void *key,
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const void *base,
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size_t num,
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size_t width,
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int (__cdecl *compare)(const void *, const void *)
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)
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{
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char *lo = (char *)base;
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char *hi = (char *)base + (num - 1) * width;
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char *mid;
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unsigned int half;
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int result;
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while (lo <= hi)
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if (half = num / 2)
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{
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mid = lo + (num & 1 ? half : (half - 1)) * width;
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if (!(result = (*compare)(key,mid)))
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return(mid);
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else if (result < 0)
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{
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hi = mid - width;
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num = num & 1 ? half : half-1;
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}
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else {
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lo = mid + width;
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num = half;
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}
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}
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else if (num)
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return((*compare)(key,lo) ? NULL : lo);
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else
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break;
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return(NULL);
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}
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int IsDigit(char p)
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{
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return ((p >= ('0')) && (p <=('9'))) ? 1 : 0 ;
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}
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// BUGBUG - This is a copy of the same routine in nmutil
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// BUGBUG - Remove this when we convert our files to CPP and use nmutil
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/* D E C I M A L S T R I N G T O U I N T */
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/*-------------------------------------------------------------------------
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%%Function: DecimalStringToUINT
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-------------------------------------------------------------------------*/
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unsigned int DecimalStringToUINT(char * pcszString, ASN1uint32_t cch)
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{
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unsigned int uRet = 0;
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char * pszStr = pcszString;
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while (cch-- && ('\0') != pszStr[0])
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{
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uRet = (10 * uRet) + (int) (pszStr[0] - ('0'));
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pszStr++; // NOTE: DBCS characters are not allowed!
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}
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return uRet;
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}
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#ifdef ENABLE_BER
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int My_memcmp(ASN1octet_t *pBuf1, ASN1uint32_t cbBuf1Size, ASN1octet_t *pBuf2, ASN1uint32_t cbBuf2Size)
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{
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int diff;
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ASN1uint32_t cbMinBufSize = (cbBuf1Size < cbBuf2Size) ? cbBuf1Size : cbBuf2Size;
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while (cbMinBufSize--)
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{
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diff = (int) (ASN1uint32_t) *pBuf1++ - (int) (ASN1uint32_t) *pBuf2++;
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if (0 != diff)
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{
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return diff;
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}
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}
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return ((int) cbBuf1Size - (int) cbBuf2Size);
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}
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#endif // ENABLE_BER
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// THE FOLLOWING IS FROM ILS.DLL MEMORY TRACKING
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#ifdef ENABLE_MEMORY_TRACKING
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#ifndef _DEBUG
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void MyDebugBreak(void)
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{
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// to correct the misleading stack dump
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DebugBreak();
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}
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#endif // _DEBUG
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#define KEEP_FREE_MEM
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#define DBG_NAME_LENGTH 16
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typedef struct tagMemTag
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{
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DWORD dwSignature;
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BOOL fActive;
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ASN1uint32_t nModuleName;
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CHAR szFileName[DBG_NAME_LENGTH];
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UINT nLineNumber;
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UINT cbSize;
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struct tagMemTag *next;
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}
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MEM_TAG;
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static MEM_TAG *s_pDbgActiveMemPool = NULL;
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#ifdef KEEP_FREE_MEM
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static MEM_TAG *s_pDbgFreeMemPool = NULL;
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#define FREE_BYTE ((BYTE) 0xAB)
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#define TAIL_BYTE ((BYTE) 0xEF)
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#define TAIL_SIZE 8
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#endif
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#define CLEAN_BYTE ((BYTE) 0xCD)
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static UINT s_cDbgActiveMemAlloc = 0;
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static UINT s_cbDbgActiveMem = 0;
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const DWORD MEM_TAG_SIGNATURE = 0x12345678UL;
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static BOOL s_fDbgInitCritSect = FALSE;
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static CRITICAL_SECTION s_DbgCritSect;
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void DbgMemTrackReverseList(void)
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{
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EnterCriticalSection(&s_DbgCritSect);
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if (NULL != s_pDbgActiveMemPool && NULL != s_pDbgActiveMemPool->next)
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{
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MEM_TAG *p, *q, *r;;
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for (q = (p = s_pDbgActiveMemPool)->next, r = q; // make sure r is not null in the beginning
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NULL != r;
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p = q, q = r)
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{
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r = q->next;
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q->next = p;
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}
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s_pDbgActiveMemPool->next = NULL;
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s_pDbgActiveMemPool = p;
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}
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LeaveCriticalSection(&s_DbgCritSect);
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}
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#define DBG_MEM_TRACK_DUMP_ALL ((ASN1uint32_t) -1)
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void ASN1DbgMemTrackDumpCurrent ( ASN1uint32_t nModuleName )
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{
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MEM_TAG *p;
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int i;
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char szMod[8];
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char szBuf[128];
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EnterCriticalSection(&s_DbgCritSect);
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for (p = s_pDbgActiveMemPool, i = 0; p; p = p->next, i++)
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{
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if (nModuleName == DBG_MEM_TRACK_DUMP_ALL || p->nModuleName == nModuleName)
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{
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ZeroMemory(szMod, sizeof(szMod));
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CopyMemory(szMod, &p->nModuleName, sizeof(ASN1uint32_t));
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wsprintfA(szBuf, "ASN1: mem leak [%u]: mod=%s, file=%s, line=%u, size=%u, ptr=0x%lx\r\n",
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i, szMod, p->szFileName, p->nLineNumber, p->cbSize, (ASN1uint32_t) (p+1));
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OutputDebugStringA(szBuf);
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}
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}
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LeaveCriticalSection(&s_DbgCritSect);
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}
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void DbgMemTrackFinalCheck ( void )
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{
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DbgMemTrackReverseList();
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ASN1DbgMemTrackDumpCurrent(DBG_MEM_TRACK_DUMP_ALL);
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if (NULL != s_pDbgActiveMemPool ||
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0 != s_cDbgActiveMemAlloc ||
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0 != s_cbDbgActiveMem)
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{
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MyDebugBreak();
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}
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if (s_fDbgInitCritSect)
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{
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DeleteCriticalSection(&s_DbgCritSect);
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s_fDbgInitCritSect = FALSE;
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}
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}
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static void _GetFileName ( LPSTR pszTarget, LPSTR pszSrc )
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{
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LPSTR psz = pszSrc;
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while (*psz != '\0')
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{
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if (*psz++ == '\\')
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{
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pszSrc = psz;
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}
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}
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lstrcpynA(pszTarget, pszSrc, DBG_NAME_LENGTH);
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}
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static BOOL _IsFilledMemory ( LPBYTE lpb, UINT cbSize, BYTE bPattern )
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{
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while (cbSize--)
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{
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if (*lpb++ != bPattern)
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return FALSE;
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}
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return TRUE;
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}
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LPVOID DbgMemAlloc ( UINT cbSize, ASN1uint32_t nModuleName, LPSTR pszFileName, UINT nLineNumber )
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{
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MEM_TAG *p;
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UINT cbToAlloc;
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if (! s_fDbgInitCritSect)
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{
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InitializeCriticalSection(&s_DbgCritSect);
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s_fDbgInitCritSect = TRUE;
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}
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cbToAlloc = sizeof(MEM_TAG) + cbSize;
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EnterCriticalSection(&s_DbgCritSect);
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#ifdef KEEP_FREE_MEM
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// add the tail size
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cbToAlloc += TAIL_SIZE;
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// any heap corruption in free pool
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{
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const int c_cKept = 32;
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MEM_TAG *q = s_pDbgFreeMemPool;
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int i;
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for (i = 0; i < c_cKept; i++)
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{
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if (q == NULL)
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break;
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if (! _IsFilledMemory((LPBYTE) (q+1), q->cbSize, FREE_BYTE))
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{
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MyDebugBreak();
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}
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if (! _IsFilledMemory(((LPBYTE) (q+1)) + q->cbSize, TAIL_SIZE, TAIL_BYTE))
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{
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MyDebugBreak();
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}
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if (c_cKept == i)
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{
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MEM_TAG *x = q->next, *y;
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q->next = NULL;
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while (x)
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{
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y = x->next;
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LocalFree(x);
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x = y;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
q = q->next;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
p = (MEM_TAG *) LocalAlloc(LPTR, cbToAlloc);
|
||
|
|
if (p != NULL)
|
||
|
|
{
|
||
|
|
p->dwSignature = MEM_TAG_SIGNATURE;
|
||
|
|
p->nModuleName = nModuleName;
|
||
|
|
p->fActive = TRUE;
|
||
|
|
_GetFileName(p->szFileName, pszFileName);
|
||
|
|
p->nLineNumber = nLineNumber;
|
||
|
|
p->cbSize = cbSize;
|
||
|
|
p->next = s_pDbgActiveMemPool;
|
||
|
|
s_pDbgActiveMemPool = p;
|
||
|
|
s_cDbgActiveMemAlloc++;
|
||
|
|
s_cbDbgActiveMem += p->cbSize;
|
||
|
|
#ifdef KEEP_FREE_MEM
|
||
|
|
FillMemory((LPVOID) ((LPBYTE) (p+1) + p->cbSize), TAIL_SIZE, TAIL_BYTE);
|
||
|
|
#endif
|
||
|
|
p++;
|
||
|
|
|
||
|
|
// lonchanc; do not fill in some garbage, we must provide same semantics
|
||
|
|
// for decoded buffers. all zeroed out.
|
||
|
|
// fill in some garbage
|
||
|
|
// FillMemory((LPVOID) p, cbSize, CLEAN_BYTE);
|
||
|
|
}
|
||
|
|
|
||
|
|
LeaveCriticalSection(&s_DbgCritSect);
|
||
|
|
|
||
|
|
return (LPVOID) p;
|
||
|
|
}
|
||
|
|
|
||
|
|
void DbgMemFree ( LPVOID ptr )
|
||
|
|
{
|
||
|
|
if (ptr != NULL)
|
||
|
|
{
|
||
|
|
MEM_TAG *p = (MEM_TAG *) ptr;
|
||
|
|
MEM_TAG *q, *q0;
|
||
|
|
p--;
|
||
|
|
if (! IsBadWritePtr(p, sizeof(MEM_TAG)) &&
|
||
|
|
p->dwSignature == MEM_TAG_SIGNATURE)
|
||
|
|
{
|
||
|
|
if (! p->fActive)
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// This memory has been freed already.
|
||
|
|
//
|
||
|
|
MyDebugBreak();
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
EnterCriticalSection(&s_DbgCritSect);
|
||
|
|
for (q = s_pDbgActiveMemPool; q != NULL; q = (q0 = q)->next)
|
||
|
|
{
|
||
|
|
if (q == p)
|
||
|
|
{
|
||
|
|
if (q == s_pDbgActiveMemPool)
|
||
|
|
{
|
||
|
|
s_pDbgActiveMemPool = p->next;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
q0->next = p->next;
|
||
|
|
}
|
||
|
|
s_cDbgActiveMemAlloc--;
|
||
|
|
s_cbDbgActiveMem -= p->cbSize;
|
||
|
|
p->fActive = FALSE;
|
||
|
|
|
||
|
|
if (! _IsFilledMemory(((LPBYTE) (p+1)) + p->cbSize, TAIL_SIZE, TAIL_BYTE))
|
||
|
|
{
|
||
|
|
MyDebugBreak();
|
||
|
|
}
|
||
|
|
#ifdef KEEP_FREE_MEM
|
||
|
|
// put in the free pool
|
||
|
|
p->next = s_pDbgFreeMemPool;
|
||
|
|
s_pDbgFreeMemPool = p;
|
||
|
|
FillMemory(p+1, p->cbSize, FREE_BYTE);
|
||
|
|
#endif
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
LeaveCriticalSection(&s_DbgCritSect);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
p++;
|
||
|
|
MyDebugBreak();
|
||
|
|
}
|
||
|
|
#ifndef KEEP_FREE_MEM
|
||
|
|
LocalFree(p);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
LPVOID DbgMemReAlloc ( LPVOID ptr, UINT cbSize, ASN1uint32_t nModuleName, LPSTR pszFileName, UINT nLineNumber )
|
||
|
|
{
|
||
|
|
MEM_TAG *p;
|
||
|
|
void *q;
|
||
|
|
|
||
|
|
if (ptr == NULL)
|
||
|
|
return DbgMemAlloc(cbSize, nModuleName, pszFileName, nLineNumber);
|
||
|
|
|
||
|
|
p = (MEM_TAG *) ptr;
|
||
|
|
p--;
|
||
|
|
|
||
|
|
if (IsBadWritePtr(p, sizeof(MEM_TAG)) ||
|
||
|
|
p->dwSignature != MEM_TAG_SIGNATURE)
|
||
|
|
{
|
||
|
|
MyDebugBreak();
|
||
|
|
return LocalReAlloc(ptr, cbSize, LMEM_MOVEABLE|LMEM_ZEROINIT);
|
||
|
|
}
|
||
|
|
|
||
|
|
q = DbgMemAlloc(cbSize, nModuleName, pszFileName, nLineNumber);
|
||
|
|
if (q != NULL)
|
||
|
|
{
|
||
|
|
CopyMemory(q, ptr, p->cbSize);
|
||
|
|
DbgMemFree(ptr);
|
||
|
|
}
|
||
|
|
|
||
|
|
return q;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif // ENABLE_MEMORY_TRACKING
|
||
|
|
|